Laylax announce that their Nitro.Vo Aegis Optics Shield will be released next month. Compatible with the Picatinny Standard, it has high strength polycarbonate at 1.55mm thickness for protection. Shields are available in Small, Medium, and Large and you can easily replace them. The heights of the shields are the following: Small 38.5mm, Medium 52mm and the Large 65.5mm.